For those keeping score at home, the weekend box office totals are in for Harry Potter and the Half-Blood Prince. Variety reports the film was second this week (behind “Funny People”) and took in “$17.7 million at 4,393″ venues, making a 19 day total of “$255.5 million.The weekend take included $3.2 million from 166 Imax venues,” where Half-Blood Prince opened with the big screen showings this week.